Hi, Brian231,
Truly a great way to start off a conversation - begin with an insult “…nonsense…” and conclude with an error!
The nonsense and completely unbiblical issues of purgatory, confessing your sins to a priest, and the no condemns/contraceptives usage.
Maybe you need to refocus your energies (away from hatered and toward learning) if you are really interested in learning about the Catholic Church.
So let’s begin by correcting the error and then move on to your three stated problem areas.
The CC is solely responsible for the complication, arrangement and declaration that certain written works were inspired by God. These books were collectively called The Bible. This took place befor 425 A.D. (“Pope Damasus promulgated the Catholic canons at the Synod of Rome in A.D. 382, and later, at the regional councils of Hippo (393) and Carthage (397, 419), the Church again defined the same list of books as inspired.”)
The take-home message is that on that First Pentecost Sunday - about 33 A.D. - the recognized birthday of the Church (and, that would be the Catholic Church because there were no Protestants around for another 1200 years!) the Holy Spirit did not deliver a book when He descended on the Disciples and Tougues of Fire appeared! Another way to count time is that the CC is about 300 years older then The Bible - so, now you know which came first!
Jesus Christ really did build HIS CHURCH on Peter (Matt 16:18 - but, you should read this entire Chapter so as to get the full context rather then an isolated verse). And, if you sincerely want scriptural references, check these out: Luke 22:33, John 21:15-17, and Galatians 1:18 - again, take the time and read the entire Chapter for each of these. You really do not want to cheat yourself out of the answers to the questions you have.
Christ promised the Holy Spirit would teach and protect HIS CHURCH (John 14:26 - again, read the entire Chapter to get the context) from evil. Jesus Christ’s CHURCH (the CC) can not teach error. If it could teach error (e.g., there is no purgatory) then it would demonstrate to the world that it is a fraud and that the Holy Spirit does not have the power to prevent an error from being taught. Now… isn’t that interesting. The same teaching about purgatory since the Apostles and Early Church Fathers - right up to today.
If you are sincere about learning the answers to your three areas of concern, you will need to do some reading. Here are some links. Take the time, pray to the Holy Spirit for the Gift of Understanding, read the material without hatred or prejudice and just think about what you have read. It will be a fruitful experience for all of us.
1.) On Purgatory:
newadvent.org/cathen/12575a.htm
2.) On Confession:
newadvent.org/cathen/11618c.htm
3.) Here is a brief response on: ** "Why is Natural Family Planning accepted by the Church while contraception is condemned? They both do the same thing–prevent pregnancy.
Because you don’t judge the morality of actions by their effects or consequences. You judge their morality by what they essentially are. Using contraceptives such as condoms or diaphragms may accomplish the same end result as NFP, but the ways they go about it are very different.
Humanae Vitae defines contraception as “every action which, in anticipation of the conjugal act, or in its accomplishment, or in the development of its natural consequences, proposes, whether as an end or as a means, to render procreation impossible” (14). Such an action actively eliminates or witholds the procreative good of the marital act. This is sinful because “every marriage act must remain open to the transmission of life” (11). Since one of the two ends of sexual intercourse is procreation (the other being unity of husband and wife, 12), engaging in sex while deliberately frustrating the procreative act is, as Pope John Paul II has repeatedly called it, “a lie in the language of the body.”
If practicing contraception is to lie in the language of the body, to practice NFP is to take the Fifth. Natural Family Planning involves restricting sexual relations to infertile periods in the woman’s cycle. Although intercourse during these times is less likely to produce a conception, a couple always remains open to the possibility, having taken no action to render it impossible; therein lies the difference (see Humanae Vitae 16). During fertile periods abstinence is practiced, a sacrifice which shows respect for God’s gift of sex and its proper ends. Conversely, practicing contraception during these times displays a lack of respect for this gift and a focus instead on selfish pleasure.
One further difference needs to be pointed out. Contraception is often a practice of convenience, while NFP, to be licit, must be a practice of necessity, requiring “serious motives to space out births, which derive from the physical or psychological conditions of husband and wife, or from external conditions” (16). Thus it is not, as some have accused, “contraception Catholic style.” **
Hopefully, this response has given you the information you need. Pray to the Holy Spirit for the Gift of Wisdom as to how you use this information.
God bless
You only generate offensive diatribe and there is no stimulation or fun to engage with someone like that. 
